Boiler-cleaner and water-heater



UNITED STATES ALFRED H. CROCKFORD, OF E PATENT EEICE.

AST NEVARK, NEW' JERSEY.

BOILER-CLEANER AND WATER-HEATER.

SPECIFICATION forming part of Letters Patent No. 360,145, dated March 29, 1887.

Application filed August 7, 1886.

To all whom it may concern.:

Be it known that I, ALFRED II. CnoekEoRD, a citizen of the United States, residing at East Newark, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Boiler-Cleaners and Tater-Heaters; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

.The several primary objects of this invention are to prevent incrustation of the shell of a boiler, to produce a constant circulation of the water in and through the same, to remove the foreign matter held in solution in the water, and to heat the feed-water before it enters the boiler.

The invention is further designed to provide an effective and simply-constructed device which will secure the several ends desired, and may be readily applied to any description of boiler or waterheater.

In the accompanying sheet of drawings, in which similar reference-letters are employed to indicate corresponding parts, Figure l is a longitudinal section of a boiler, taken centrally therethrough, and a side elevation of the attachment which forms the subject of the invention. Fig. 2 is a vertical section of the attachment and pipe-connections, taken through line .fc on Fig. 3, which is a top view of the water receptacle or tank of said attachment. Fig. 4 is a vertical section of the injector and connecting-pipes. Fig. 5 is a side elevation of the expanded or broadened end of the pipe through which the water iiows from the boiler to the water-tank, and Fig. 6 is a front elevation of said 'expanded portion. Fig. 7 is a sectional view of one end of a boiler, illustrating one method of arranging the pipes that connect the boiler and water-tank; and Fig. 8 is a sectional view of a portion of the pipe leading from the boiler to the tank and an inserted injector.

In the above-described drawings, A indicates a boiler, which may be of any size or construction, with which the attachment may be used.

B is a tank or water receptacle, through which the water passes in its passage to and Serial No. 210,294. (No model.)

from the boiler and into which the cold feedwater is pumped, mixing with the already heated water in the tank from the boiler, so that the injurious eitects resulting from fore ing a cold body of water directly into the intensely-heated interior of the boiler is avoided. The cold feed-water enters the tank B through a pipe, which may simply penetrate the shell of the tank and open into the interior thereof, or may extend straight down within the tank, as indicated in Fig. 2; or the said feed-pipe may be formed in a coil within the tank. One advantage of these latter constructionsis that the cold water is heated as it ilows downward through the coil or straight pipe, and does not lower the temperature of the water, as it might if it came in direct contact with the heated water.

The water tank or receptacle is connected with the boiler by asystem of piping, through which the water fromthe boiler flows to and from the tank, c indicating the pipe through which the water passes to the tank and d the pipe through which the water passes from the tank; and while but a single pipe is shown in the drawings Afor conveying the water to and from the boiler, still two or more of each ol' said pipes c and d may be employed, in order to convey a greater or less amount of water, according to the capacity of the boiler and tank.

The end o1' the pipe or pipes c are provided with broadened or expanded ends c, arranged within the boiler at about the water-line, as indicated, said broadened ends or receivers when more than one are employed, being arranged either in a horizontal line or plane across the boiler on the water-line or in a vertical line one above the other, the object of these various arrangements being to enable the water and the impurities therein to How freely into the tank B.

The face cl ofthe receiver c maybe entirely open or provided with perforations c3 therein, being preferably concave, as indicated in Fig. 5 by dotted lines, when thus perforated the said perforations serving to divide any lumps of greasy matter that maybe heldin the water. The opposite end of the pipe c extends down within the interior of the tank, as in Fig. 9, and thereby conducts the dirty water from the IOO boiler down to the bottom of the tank, where the sediment is precipitated down into the re ceptacle b.

The pipe d, through which the water passes from the tank to the boiler, is preferably so arranged as to lead and open into the bottom of the interior of the boiler, either as indicated inFigs. l and 7 or in any suitable manner. The advantage resulting from thus carrying the pipe d down near or toward the bottom of the interior of the boiler is to cause a current below the surface of the large body of water in said boiler, and by thus agitating the water near the bottom prevents the precipitation of the sediment upon the boiler sheets, and throwing the said sediment toward the surface permits the same tobe drawn into the pipe c, and thence into the tank, in which the separation of the sediment and water is effected. The opposite end of said pipe enters the tank preferably at the top, as indicated in Figs. 2 and 3, so that the water therein is drawn into'said pipe d from the surface of the water-column in said tank without agitating the water near the bottom thereof and preventing the deposition of the silt or impurities; or, as indicated in Fig. 1 by dotted lines, said pipe cl may enter the bottom or side of the tank and extend up within said tank, and thus draw the water from the top of the watercolumn. This feature of leading the currents of the cold feed-water, whichcontains many impurities, and the dirty water from the boiler down to the bottom of the tank and drawing the clear water from the top of the water-column in the tank, is of great importance, the sediment being thereby confined to the bottom of the tank and the silt-chamber, and is not carried to the boiler by the return current. By carrying the cold-water pipe down through the hot water column in the tank, the temperature of the cold water is raised, and, also, by means ofthe extension of the pipe @,Which conveys the hot water from the boiler, the water in the tank is kept much hotter, the pipe acting as a radiator. In said pipe d, or, "if desirable, in-the pipe a also, at any suitable point therein, is arranged an injector, e, of any suitable or known construction, which is connected with the steam-space in the boiler by a pipe, e', through which steam is supplied to the injector. 'Ihe said injectoris so arranged that when the steam is blowing through the same the water from the tank is drawn into and forced through the pipe d and into the boiler7 thus'maintaining a circulation of the water from the tank to the boiler through said pipe and a ret-urn current from the boiler to the tank through the pipe c.

Should it be considered desirable to accelerate the movement of the return current, an injector may be inserted in the pipe c, as hereinbefore mentioned, and as shown in Fig. 8. On the bottom ofthe tank B is secured or formed a silt or mud receptacle or drum, b', which is preferably connected with the main portion of the tank by a narrow neck, b2, the bottom of said main portion sloping downto said neck, substantially as indicated in Figs. l and 2, and thereby preventing any sedimentary deposition on Vthe bottom of said main portion, causing the gravitation of the silt into the receptacle b. A blow-off, b3, is provided in the said receptacle to clean the same. All of the pipes b, c, (l, and bi are provided with suitable valves, f.

To render the interior of the drum b easily accessible, a man-hole, g, is provided, as shown in Fig. 2.

By employing an injector to produce the circulation of the water, the tank, &c., may be placed in any position in relation to the boiler, adjacent thereto or at a distance therefrom.

Having thus set forth my invention, what4 I claim as new is- 1. In a water-heater, the combination of a water tank or receptacle, a cold-water-feed pipe leading down through the interior of said tank toward the bottom thereof, a discharge-pipe leading down through the interior of said tank toward the bottom thereof and adapted to be connected with a boiler, to

conduct the water therein to said tank, and a pipe opening into the top of the interior of'said tank and adapted to be connected with aboiler, to conduct the water in said tank from the upper portion of the' water-column therein to said boiler, for the purposes set forth.

j 2. In a water-heater, the combination of a water tank or receptacle, a hot-waterdischarge pipe leading down through theinteriorl of said tank toward the bottom thereof and adapted to be connected with a boiler, to conduct the water therein to said tank, a pipe opening into the top of the interior of said tank and adapted to be connected with a boiler, to conduct the water in said tank from the upper portion of the water-column therein to said boiler, and an injector arranged in one or both of said pipes to accelerate the circulation of water therethrough to and from the tank and boiler, for the purposes set forth.

3. The combinatiomwith a boiler, of a water tank or receptacle, a feed-pipe leading from said boiler to said tank and provided with an expanded or broadened end within the boiler, the end of said feed-pipe which connects with or enters the tank extending down within the same, a discharge-pipe leading from the top of said tank to the bottom of the interiorvof the boiler, and an injector arranged in said discharge-pipe and connected by a suitable pipe with the steam-space in Vsaid boiler, for the purposes set forth.`

4E. The combination,with a boiler, of a water `tank or receptacle, a cold-water-feed pipe leading to and connected with said tank, a feed-pipe leading from said boiler to said tank and provided with a broadened or expanded end within the boiler, the end of said feedpipe which connects with the tank extending down within the same, a discharge-pipe leading from the top or upper portion of the interior of said tank to the bottom of the inte- IOO IIO

iig

rior of said boiler and adapted to Convey the Water from said tank to the said boiler, an -injector arranged in said discharge-pipe between the said tank and boiler and connected by a suit-able pipe with thestealn-spaoein said boiler, and a sediment-receptacle secured to or formed on the bottom of said Water-tank, substantially as and for the purposes set forth.

5. In a waterheater and boiler-oleaner, the combination of a Water-tank having an inclined bottom, a silt-receptacle opening into said inclined bottom of the tank and provided with a man-hole and blow-off, a hot-Water-discharge pipe leading` down Within said tank toward the bottoni thereof and said silt-recep- ALFRED H. CROCKFORD.

Witnesses:

FREDERICK F. CAMPBELL, FREDK. C. FRAENTZEL. 

